“We would ask all premises owners in the Portadown area to not discard any CCTV from January 5 onwards, as we may come calling in the next few days to try and confirm various sightings as they come in,”

Police said: “One thing that has stood out during this investigation is that not a single person has had a bad word to say about Norman.

“His family’s distress speaks for itself. Please help us help them get Norman home. Look at the photos, if any of them jog your memory give us a ring.”